IFRS 18 becomes mandatory for annual reporting periods beginning on or after January 1, 2027, introducing significant changes to how companies present and disclose financial performance.
For financial reporting teams, the transition involves more than updating the statement of profit or loss. New subtotals, management-defined performance measures, comparative information and related disclosures need to be prepared, reviewed and validated correctly. For companies subject to ESEF, those disclosures must also be represented using the appropriate IFRS 18 taxonomy structure and Inline XBRL.
That makes 2026 an important preparation year.
The EU has endorsed IFRS 18, the IFRS 18-aligned taxonomy is available, ESMA has published the corresponding ESEF taxonomy files, and new implementation questions are already being considered by the IFRS Interpretations Committee.
For reporting teams, the challenge is therefore twofold: How do we prepare and govern the new IFRS 18 disclosures—and how do we ensure those same disclosures are correctly structured, tagged and validated for ESEF?
This is where an integrated financial disclosure management platform becomes particularly important.
What Is IFRS 18?
IFRS 18 Presentation and Disclosure in Financial Statements replaces IAS 1 and applies to annual reporting periods beginning on or after January 1, 2027, with earlier application permitted.
The standard focuses particularly on improving how companies communicate financial performance through their financial statements. Read the IFRS Foundation overview of IFRS 18.
Three areas are especially important for financial reporting teams:
| IFRS 18 requirement | What reporting teams need to prepare for |
|---|---|
| New categories and subtotals | Income and expenses in the statement of profit or loss to be classified into five categories: operating, investing, financing, income taxes and discontinued operations. |
| Management-defined performance measures | Qualifying measures used by management in public communications need to be disclosed in the financial statements, together with required explanations and reconciliations. |
| Aggregation and disaggregation | Stronger requirements apply to how information is grouped, separated, labelled and presented across financial statements and notes. |
These requirements affect the financial statements themselves, but they also influence the broader reporting process surrounding them.
What Are the Latest IFRS 18 Developments for 2026?
IFRS 18 preparation has moved considerably during 2026. Reporting teams now have much more regulatory and technical certainty than they did a year ago.
IFRS 18 Has Been Endorsed in the EU
The European Commission adopted Commission Regulation (EU) 2026/338 on February 13, 2026, incorporating IFRS 18 into EU-adopted IFRS. Companies within scope must apply IFRS 18 at the latest for their first financial year beginning on or after January 1, 2027. View Commission Regulation (EU) 2026/338.
This is particularly important for European issuers because the endorsement question is now resolved. IFRS 18 is no longer simply an IASB standard that reporting teams know is coming. The EU regulatory basis for implementation is in place.
The 2025 IFRS Accounting Taxonomy Already Reflects IFRS 18
The IFRS Accounting Taxonomy 2025, published on March 27, 2025, incorporates the presentation and disclosure requirements introduced by IFRS 18. Importantly, it provides separate entry points for entities continuing to apply IAS 1, and entities applying IFRS 18.
The IFRS Foundation’s 2026 guidance confirms that preparers continuing to apply IAS 1 should use the Full IFRS Accounting Standards Entry Point, while IFRS 18 preparers should use the Early Application of IFRS 18 Entry Point. This distinction matters because teams should not simply carry forward an IAS 1-based taxonomy structure once the underlying financial statements have transitioned to IFRS 18. Explore the IFRS Accounting Taxonomy 2025.
The IFRS 18 Taxonomy Is the Current Technical Baseline for 2026
The IFRS Foundation has kept the 2025 IFRS Accounting Taxonomy current for 2026 reporting, giving reporting teams a stable taxonomy baseline for preparation. For organizations preparing for IFRS 18, this creates an opportunity to review taxonomy mappings and structured reporting requirements before the first mandatory 2027 reporting cycle.
The taxonomy also contains an IFRS 18 management-defined performance measure reconciliation formula. It checks whether an MPM equals the relevant IFRS-defined total or subtotal plus the disclosed adjustments, providing an additional validation mechanism for structured reporting.
ESMA’s 2025 ESEF Taxonomy Includes IFRS 18
ESMA’s 2025 ESEF taxonomy contains separate IAS 1 and IFRS 18 element-definition entry points for issuer extension taxonomies. The ESEF Taxonomy 2025 files were published by ESMA in April 2026 and include the architecture, validation rules and associated documentation required for ESEF implementation. View the current ESMA ESEF Taxonomy.
For ESEF reporting teams, this means the technical foundation required to begin IFRS 18 taxonomy preparation is already available.
IFRS 18 Implementation Questions Are Already Emerging
Although IFRS 18 itself has been issued, implementation questions continue to emerge as companies examine the requirements in practice. In June 2026, the IFRS Interpretations Committee considered several IFRS 18 questions, including:
• management-defined performance measures containing hypothetical income or expenses;
• what qualifies as a public communication when identifying an MPM;
• classification of income and expenses from cash and cash equivalents;
• financing as a main business activity;
• labels applied to subtotals; and
• presentation of operating expenses.
These were tentative agenda decisions and should not be treated as new IFRS 18 requirements. At the time of writing, comments are open until September 9, 2026. Read the June 2026 IFRIC Update.
The IASB has also agreed to propose a targeted amendment relating to certain tax charges that operate as direct substitutes for income taxes. An Exposure Draft is expected in Q4 2026. This proposal is not yet an effective IFRS 18 requirement, but it is another development reporting teams should monitor.
The implication is clear: IFRS 18 implementation is active, and reporting teams need systems capable of supporting both the current requirements and evolving implementation guidance.
Why IFRS 18 Is a Disclosure Management Challenge
IFRS 18 is often discussed primarily as a change to the statement of profit or loss. But reporting teams do not produce financial statements in isolation.
An IFRS 18 reporting cycle may involve:
Financial data → Primary financial statements → Comparative information → Disclosure notes → Management-defined performance measures → Narrative and explanations → Review and approval → Taxonomy mapping → XBRL/iXBRL tagging → Validation → Final ESEF output
The requirement may originate in IFRS 18, but the work extends across the financial disclosure process. That is why IFRS 18 readiness requires more than accounting software or a standalone tagging tool. It requires a controlled environment in which the disclosure can be prepared, reviewed, structured and validated as one reporting process. Explore EcoActive Financial Disclosure Management.
New Subtotals Need to Flow Correctly Through the Report
IFRS 18 requires two new defined subtotals in the statement of profit or loss: operating profit, and profit before financing and income taxes.
For reporting teams, adding a subtotal is not simply a formatting exercise. The number may also appear in comparative periods, notes, management commentary, tables, calculations, cross-references, MPM reconciliations and structured reporting.
The reporting platform therefore needs to maintain consistency between the financial data and every disclosure that depends on it. This is one reason EcoActive keeps financial numbers and narrative disclosures connected within the reporting workflow, rather than treating narrative preparation and structured reporting as separate downstream activities.
MPMs Bring Additional Information Into the Financial Statements
Management-defined performance measures, or MPMs, are one of the most significant new disclosure requirements under IFRS 18. IFRS 18 requires companies to disclose qualifying MPMs used in public communications when those measures meet the standard’s definition.
For financial reporting teams, this can bring information previously managed across investor communications and internal reporting into the audited financial statement disclosure process. That creates several connected requirements:
Identify the measure → Assess whether it qualifies as an MPM → Prepare the required disclosure → Reconcile it to the appropriate IFRS-defined total or subtotal → Review and approve the disclosure → Apply the appropriate structured-reporting treatment → Validate the reconciliation
The IFRS Accounting Taxonomy 2025 already contains dedicated structures and a validation formula for MPM reconciliations. This is exactly where integrated disclosure management and XBRL become valuable. Instead of preparing the MPM disclosure in one system and sending it elsewhere for tagging and validation, the structured reporting process can remain connected to the disclosure itself.
Comparatives Need to Be Managed as Part of the Transition
IFRS 18 applies retrospectively and requires comparative information for the preceding period. For calendar-year companies applying IFRS 18 in 2027, 2026 becomes an important comparative reporting period.
Teams therefore need to consider restated comparative information, changed statement structures, prior-period versus current-period presentation, disclosure notes, MPM reconciliations, review and sign-off, and corresponding ESEF tagging. This is another reason IFRS 18 implementation should begin before the 2027 year-end reporting cycle.
Why IFRS 18 Requires More Than a Traditional Disclosure Management Tool
A traditional disclosure management process may help companies produce financial statements and annual reports. A separate XBRL tool may then be used after the report is substantially complete. That creates a handoff:
Prepare disclosure → finalize report → send for tagging → review tags → correct disclosure → retag → validate
IFRS 18 makes this separation increasingly inefficient. When a new subtotal, MPM disclosure, expense presentation or comparative figure changes, its structured representation may need to change with it. The stronger model is:
Prepare → structure → review → tag → validate — within the same reporting workflow.
This is the model EcoActive is designed around.
Inbuilt XBRL Tagging Is an Important IFRS 18 Advantage
One of EcoActive’s key advantages for IFRS 18 reporting is that XBRL and Inline XBRL are integrated into the disclosure workflow rather than added after report preparation. EcoActive’s XBRL/iXBRL capabilities are powered by Ez-XBRL, bringing established structured-reporting technology directly into the financial disclosure environment.
This means the reporting team can work toward the final structured output without managing an entirely separate tagging process after the disclosure has been approved. For IFRS 18, this becomes particularly relevant when financial statement structures change, new taxonomy elements need to be used, mappings need to be reassessed, extensions require review, MPM disclosures are introduced, comparative information changes, or taxonomy validations identify an issue.
The disclosure and its structured representation remain part of the same reporting cycle. See how Integrated iXBRL works within EcoActive.
Built for the IFRS 18-Aligned ESEF Environment
The 2025 ESEF taxonomy gives IFRS 18 reporters the taxonomy structure needed to represent disclosures under the new standard. But taxonomy availability alone does not solve the reporting problem. Teams still need to determine the correct IFRS 18 presentation, prepare and review the disclosure, select appropriate taxonomy elements, create extensions where necessary, apply structured tagging, validate the output, and produce the regulator-ready filing package.
EcoActive connects these activities through an XBRL-integrated authoring process, with tagging embedded in the reporting workflow and validation performed throughout preparation. This becomes especially important when transitioning from IAS 1-based reporting to the IFRS 18 taxonomy structure.
Continuous Validation Matters More Under IFRS 18
IFRS 18 introduces additional points where a reporting inconsistency can arise. A reporting team may need to validate calculations, new subtotals, comparative figures, MPM reconciliations, disclosure consistency, taxonomy mappings, contexts and units, extensions, tagging, and ESEF filing requirements.
Discovering these issues only after the XHTML package has been generated can create unnecessary rework. EcoActive uses embedded validation throughout the disclosure process, allowing reporting teams to identify issues while the report is being prepared rather than waiting until final filing production. For IFRS 18, that provides an important advantage: the new disclosure structure and the structured reporting layer can be reviewed together.
What Should IFRS 18 Reporting Teams Do in 2026?
2026 should be treated as an implementation year.
1. Assess the IFRS 18 Presentation Changes
Map the current IAS 1 presentation against the IFRS 18 requirements, including classifications, required subtotals, operating expense presentation and aggregation or disaggregation.
2. Identify Potential MPMs
Review public communications and determine which performance measures may fall within the IFRS 18 definition.
3. Prepare Comparative Information
Understand how the 2026 comparative period will need to be presented when IFRS 18 is first applied.
4. Review the IFRS 18 Taxonomy
Use the 2025 IFRS Accounting Taxonomy and the corresponding ESEF taxonomy as the current technical baseline for implementation.
5. Reassess Existing Mappings and Extensions
Do not assume that IAS 1-era mappings should automatically be carried forward into an IFRS 18 report.
6. Test XBRL/iXBRL Early
Run IFRS 18 disclosures through the structured-reporting process before the first mandatory year-end filing.
7. Validate the Whole Disclosure
Test financial statements, notes, MPM reconciliations, structured tags and ESEF output together.
8. Monitor New IFRIC and IASB Developments
Implementation questions are still being considered. Teams should distinguish between existing requirements and tentative or proposed developments.
IFRS 18 Timeline for ESEF Reporting Teams
| Date | Development | What it means |
|---|---|---|
| April 9, 2024 | IASB issued IFRS 18 | Began the transition from IAS 1 to IFRS 18. |
| March 27, 2025 | IFRS Accounting Taxonomy 2025 published | Added IFRS 18 taxonomy structures and an IFRS 18 entry point. |
| February 13, 2026 | EU endorsed IFRS 18 | Confirmed IFRS 18 within EU-adopted IFRS. |
| April 2026 | ESMA published the ESEF Taxonomy 2025 files | Gave ESEF reporting teams the operational IFRS 18 taxonomy structure for preparation. |
| June 2026 | IFRIC considered additional IFRS 18 implementation questions | Highlighted areas such as MPMs, public communications, subtotals and operating expenses. |
| July 2026 | IASB agreed to propose a targeted IFRS 18 amendment | A Q4 2026 Exposure Draft is expected; the proposal is not yet effective. |
| January 1, 2027 | IFRS 18 becomes mandatory for applicable annual periods | IFRS 18 enters the live reporting cycle. |
How Does EcoActive Support IFRS 18 Reporting?
EcoActive combines financial disclosure management with integrated XBRL/iXBRL capabilities powered by Ez-XBRL. Teams can prepare financial statements and notes, manage reviews and approvals, run validations, apply structured tagging and generate ESEF outputs within one governed reporting environment.
EcoActive provides an AI-native financial disclosure management environment with integrated XBRL/iXBRL tagging powered by Ez-XBRL—bringing disclosure preparation, review, validation, taxonomy-driven structured reporting and final ESEF output into one controlled reporting process.
As IFRS 18 moves toward mandatory application in 2027, that integrated approach gives reporting teams a stronger foundation for managing both the disclosure requirements and the digital reporting requirements that follow.
Frequently Asked Questions
When does IFRS 18 become mandatory?
IFRS 18 becomes effective for annual reporting periods beginning on or after January 1, 2027, with earlier application permitted. It replaces IAS 1 Presentation of Financial Statements.
Has IFRS 18 been endorsed in the EU?
Yes. Commission Regulation (EU) 2026/338, dated February 13, 2026, incorporated IFRS 18 into EU-adopted IFRS.
What are the main changes introduced by IFRS 18?
IFRS 18 introduces new categories and defined subtotals in the statement of profit or loss, disclosures about management-defined performance measures, and stronger aggregation and disaggregation requirements.
Does IFRS 18 affect ESEF reporting?
Yes. Changes to the IFRS financial statements and disclosures also need to be represented correctly within the ESEF Inline XBRL report, affecting taxonomy selection, mapping, extensions, tagging and validation.
Is an IFRS 18 ESEF taxonomy already available?
Yes. ESMA’s ESEF Taxonomy 2025 contains separate IAS 1 and IFRS 18 element-definition entry points.
Which taxonomy should reporting teams use when preparing for IFRS 18?
The 2025 IFRS Accounting Taxonomy and ESEF Taxonomy 2025 provide the current technical baseline for IFRS 18 preparation in 2026. Preparers should use the taxonomy entry point that corresponds to the accounting standard they are applying.
Does the IFRS 18 taxonomy support management-defined performance measures?
Yes. The IFRS Accounting Taxonomy 2025 contains IFRS 18 structures for MPM reporting and includes a validation formula for reconciling an IFRS-defined subtotal with the related MPM.
Why is integrated XBRL important for IFRS 18?
Integrated XBRL allows structured reporting to remain connected with financial statement and disclosure preparation. When an IFRS 18 disclosure changes, teams can review its structured representation as part of the same reporting workflow rather than transferring the finished report into a separate tagging process.
How does EcoActive support IFRS 18 reporting?
EcoActive combines financial disclosure management with integrated XBRL/iXBRL capabilities powered by Ez-XBRL. Teams can prepare financial statements and notes, manage reviews and approvals, run validations, apply structured tagging and generate ESEF outputs within one governed reporting environment.
Prepare for IFRS 18 with disclosure management and XBRL built into the same reporting process.
